Double-acting diaphragm-pump.



1. H. TEMPLIN.

DOUBLE ACTING DIAPHRAGM PU-MP.

APPLICATION FILED MAR. 17, 1909.

1,171,561. Patented Feb. 15,1916.

WWW W (702174. Swab/V,

UNITED STATES PATENT OFFICE.

- 1 JOSEPH H. TEMPLIN, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 SANTO MANUFACTURING COMPANY, OF PHILADELPHIA,

PENNSYLVANIA, A CORPORATION or DELAWARE.

DOUBLE-ACTING DIAPHRAGM-PUNCH ,Speciflcation of Letters Patent.

Patented Feb. 15,1916.

To all Ll./LO7)'L it may concern:

Be it known that I, JosEPH H. TEMPLIN, citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Double-Acting Diaphragm-Pumps, of which the following is a specification.

My invention relates in general to a novel construction of a double acting-diaphragm pump, preferably air pumps, and its essential object is to reduce the friction of the moving parts thereby utilizing the full motive force to produce the resultant vacuum or air pressure.

Another object is by means of a simplified construction to reduce the noise, also the weight and cheapen the cost of construction. And furthermore to prevent .loss of power by leakage which occurs around the pistons of double acting diaphragm pumps as usually constructed.

the actuating motor.

It consists also of other novel features as hereinafter more fully described.

In the accompanying drawings, Figure 1 is a view, partly in side elevation and partly in vertical section, of the pumplng mechanism embodying my improvements; Fig. 2 is a sectional view on the line BB of Fig. 1; and Fig. 3 is a detail view in end elevation, showing the connection of the yoke to the operating crank.

Similar letters refer to like parts throughout the several views.

A represents a yoke provided with a pair of platens B and B" to each of which are secured-the diaphragms C and D, respectively; the diaphragms are in turn, by means of clamping rings E and E and also bolts F, secured to the air chambers or casings G and G; these casings are conveniently con structed so that suitable inlet valves H and H and suitable outlet valves I and I are readily accessible and allow the free ingress and egress of the air as desired. The yoke A is connected by links LL to crank arms I carried by the rotating shaft N of The links LL, as clearly shown in Fig. 3 of the drawing, are formed of two members which are rigidly connected to the yoke A, and connected to hearing blocks which cooperate respectively with the cranks MM.

In the illustrations it can be readily unare also rigidlyderstood thatno guides or cross heads are requlred, for as the yoke is reciprocatedthe diaphragms slacken in the center of thethrough their respective inlet (and outletvalves and also their inlet and outlet ports alternately.

It-will be readily seen that this I double acting system requires fewer moving parts and mpossibility of leakage as compared with the double acting system wherein a single diaphragm is used piston requiring guides, stuffing-boxes, and connecting rods nicely machined, and furthermore the advantages 0f this double acting diaphragm over the single acting diaphragm are, that when for exhaustingair, thevacuum on one dia-' phragm at the extreme end of its outward stroke tends to return the diaphragm and through the yoke returns the opposite diaphragm to central position thereby assisting the cranks and balance wheels to store up energy to pass the opposite center and vice versa, which action 1s effected to a greater degree of economy of power in thisconstruction as the yoke is free to move without any frictional contact whatever and therefore recombination a pump casing open at each side, a transverse partition dividing the pump casing centrally thereof, said partition having a chamber formed therein with openings leading from each side of the partition, valves for said openings, a flexible and operated by a;

the pump is used' them especially, as it is diaphragm attachedtoeach outer end of the area than the area of the 'respectiveends to pump casing, each diaphragm being of which it is attached, a circular platen atslightly greater, area than the area of the tached to each diaphragm centrally thereof, respective ends to which it is attached, a said platen being of less diameter than the circular platen attached to each diaphragm inner-end of the casing whereby each diacentrally thereof, said platen being of less phragm and platen may be vibrated across a diameter than the inner end of the casing plane containing the connection of the diawhereby each diaphragm and platen may be phragm to thecasing, a rigid yoke connectvibrated across a plane containing the con.- ing said platen, a rotating shaft, eccentric nection of the diaphragm to the casing, a members carried by said rotating shaft,- rigid yoke connecting said platen, a rotating links connected to said yoke at opposite ends shaft, eccentric members carried by said rothereof and cooperating directly with the retating shaft, links connected to said yoke at spective eccentric members, each of said opposite ends thereof and cooperating di links having a rigid connection with the rectly with the'respective eccentric members. yoke and a rigid connection with the bear- 2. A double acting pump including in'con1 ing block cooperating with' the eccentric bination, a pump casing open at each side, a members. I p transverse partition dividing the pump cas- In testimony whereof I aiiix my signature ing centrally thereoflsaid partition having a in presence of two witnesses.

' chamber formed thereinwith openings leading from each side of the partition, valves JOSEPH TEMPLKNQ for said openings, at flexible diaphragm at- Witnesses: tached to each outer end of the pump casing, WM. H. HALL,

each diaphragm being of slightly greater C. W. 'lnnrun. 

